Kitchen + Home Silicone Stretch Lids - Set of 6 Silicone Food Saver Covers - BPA Free, Dishwasher, Microwave, Oven and Freezer Safe SUPERIOR QUALITY - Be careful with look-alike products. Ours have been thoroughly tested, and they are made from a stronger material that won't tear or slip off. Despite the thick construction, they stretch better, and provide a sturdier and leak-proof suction lid. LIDS THAT FIT  Packed with elasticity, these things can expand to fit many shapes and sizes of containers, and then contract to create a strong hold. Round in shape, but effective on various containers with different geometry. Place on square or rectangle dishes just as easily as round or oval ones. With several sizes in each set, you are sure to have one for anything you need to cover. REUSEABLE  Unlike plastic wrap, baggies and other disposable storage items, these can be used over and over again. They will retain their shape and ability for many years, and they are easily washed when dirty. TEMPERATURE RESISTANT  Extra thick silicone is durable and will not tear or warp. They can be used over again, and are microwave, dishwasher, oven safe and freezer safe. FDA APPROVED  These stretch lids are FDA Approved 100% Food Grade Silicone, making them non-toxic and BPA-Free. Set of six convenient sizes: 2.75", 3.9", 5.1", 5.7", 6.7", and 8.3".